Flange Nut, M20-2.50, Steel, Class 8, Zinc Plated, 2 PK This serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage to the part and making it less likely to loosen as a result of an uneven fastening surface..
.3/8"-16 x 6" Hot Dip Galvanized Grade 2 / A307 Steel Coarse Thread Carriage Bolts 4PK The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.
1/4"-20 x 1" Zinc Plated Grade 5 Steel Coarse Thread Carriage Bolts 1 12PK The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened..
1/4"-20 x 1" Zinc Plated Grade 5 Steel Coarse Thread Carriage Bolts 1 12PK The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.